Enshi tobacco-growing areas located in Qingjiang river, hubei province, and Lichuan is the largest producing areas.This study was carried out in Lichuan,Enshi autonomous prefecture.Through investigating the main cultivars in Enshi,and on this basis,studyed and discussed the effect of nitrogen rates and leaves of tobacco remained on yield and quality of different flue-cured tobacco varieties.To provide the technical and theoretical support for introducing and promoting the characteristic tobacco varieties,fo...